Question 18
Select the numberthat can replace the question mark (?) in the following series.
87, 89, 92, 97, 104, 115, ? , 145
Solution
The series has the addition of prime numbers. Like as,
87 + 2 = 89
89 + 3 = 92
92 + 5 = 97
97 + 7 = 104
104 + 11 = 115
115 + 13 = 128
128 + 17 = 145
$$\therefore$$ The correct answer is option B.
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